9.1

CVE-2025-71116: libceph: make decode_pool() more resilient against corrupted osdmaps

Modified
AliasesUBUNTU-CVE-2025-71116DEBIAN-CVE-2025-71116
Published 14-01-2026Last modified 19-10-2026

Vulnerability summary

CVE-2025-71116 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 63 · Related 47
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0017MGASA-2026-0018

Timeline

  1. 14-01-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: libceph: make decode_pool() more resilient against corrupted osdmaps If the osdmap is (maliciously) corrupted such that the encoded length of ceph_pg_pool envelope is less than what is expected for a particular encoding version, out-of-bounds reads may ensue because the only bounds check that is there is based on that length value. This patch adds explicit bounds checks for each field that is decoded or skipped.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

Increase +0.09 pp

From 0.37% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < d061be4c8040ffb1110d537654a038b8b6ad39d2 | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < 145d140abda80e33331c5781d6603014fa75d258 | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < c82e39ff67353a5a6cbc07b786b8690bd2c45aaa | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < e927ab132b87ba3f076705fc2684d94b24201ed1 | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < 5d0d8c292531fe356c4e94dcfdf7d7212aca9957 | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < 2acb8517429ab42146c6c0ac1daed1f03d2fd125 | ≥ 4f6a7e5ee1393ec4b243b39dac9f36992d161540, < 8c738512714e8c0aa18f8a10c072d5b01c83db39 | 3.9
  • linux_kernel≥ 3.9.1, < 5.10.248 | ≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.160 | ≥ 6.2, < 6.6.120 | ≥ 6.7, < 6.12.64 | ≥ 6.13, < 6.18.3 | 3.9 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.3-1

3 vendors · 159 products

References

41 links
Show all 41 references